Microsoft issues Windows 10 update which deleted files for some users, then retracts the update. A user wonders if he can run two different older versions of Microsoft Office Professional with newer versions or with a newer computer. Yale Smart Lock mix-up makes it impossible for some users to enter or leave their homes in the United Kingdom. A caller has issues with a problematic update to Windows 10 that is partially installed. A Windows 7 user wants to change some of his hard disks in a multi-disk system. A Windows 7 user wants to know if the older versions of his Adobe software will work with Windows 10. Erik and Bob give their opinions on "cloud" based backup services. A caller wants to stop renting his modem from the cable company and seeks a compatible replacement. A user with an older laptop seeks suggestions on how best to back up his data. Twitter under investigation in Europe for not revealing how it tracks you.